German Cedrik-Marcel Stebe was leading Joao Souza 6-3, 2-0 when the Brazilian retired.

French crowd favorite Jo-Wilfried Tsonga and American Andy Roddick are also on Sunday's schedule. Tsonga will open against Russia's Andrey Kuznetsov, while Roddick will likely have the crowd against him when he meets Frenchman Nicolas Mahut.

Six-time champion Rafael Nadal beat 2009 winner Roger Federer in last year's final to capture a second straight French Open title. Nadal shares the men's record, along with Bjorn Borg, with his six Open Era championships here.

Nadal has been the runner-up to Novak Djokovic in the last three Grand Slam finals overall, including this year's Australian Open.